Created attachment 59307[details]
screenshot of civ4 on wine-1.3.15 with mesa-7.11.2
My problem appears to be identical to bug 35373. After all, it was the same with the mesa version that was supposed to have it fixed.
The system:
Gentoo amd64 multilib, kernel-3.3, GMA4500MHD
Intel userspace driver version: git
Affected/tested mesa versions:
7.11.2, 8.0, git
The problem:
Starting Civilization IV from wine-1.3.15 onwards (the first version to use that extension) it paints too dark images as soon as accessing the main menu.
Temporary solution (as in above bug 35373):
MESA_EXTENSION_OVERRIDE="-GL_EXT_texture_sRGB_decode"
There is an option in wine-1.3.15 to disable hardware pixel- and vertexshader, turned off it renders graphics less dark, but still not right.